![]() If the input is "abcxyz", it matches nothing.If the input is "abc123xyz", it matches substring "123".This regex matches any numeric substring (of digits 0 to 9) of the input.In fact, it could match zero or more substrings of the input (with global modifier). A regex may match a portion of the input (i.e., substring) or the entire input.In this case, + matches one or more digits. The +, known as occurrence indicator (or repetition operator), indicates one or more occurrences ( 1+) of the previous sub-expression.In this example, matches any SINGLE character between 0 and 9 (i.e., a digit), where dash ( -) denotes the range. It matches any SINGLE character in the list. The, known as character class (or bracket list), encloses a list of characters.A regex ( regular expression) consists of a sequence of sub-expressions.E.g., the regex x matches substring "x" regex 9 matches "9" regex = matches "=" and regex matches Special Regex Characters: These characters have special meaning in regex (to be discussed below). ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |